1: 74 percent / LiAlH4 / diethyl ether / 1.5 h / Heating 2: CrO3, pyridine / CH2Cl2 / 0.25 h 3: ethanol / Ambient temperature; overnight 4: NaH / tetrahydrofuran / 0.25 h 5: 1.5 h / 180 - 190 °C / 0.2 Torr 6: H2O / PtO2 / ethyl acetate View Scheme